Why do farmers in Ping Bian continue to plant such a tightly controlled, labor intensive crop?

为什么屏边的农民还要继续种这种控制严格、劳动密集的作物呢？

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Under intensive cropping with retention of crop residue management regimes, soils can become suppressive to Rhizoctonia root rot.

保留作物残体的精耕栽培制度可使土壤变为对病害有抑制作用的抑病土。

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The aim of the field experiment was to investigate to what extent such a system could prevent soil degradation resulting from very intensive crop rotations.

此次田间试验的目的，是研究这一方法能在多大程度上防止由于精细的作物轮作所产生的土壤退化。

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That's because grain prices also are strong, and also because cotton is an expensive and labor-intensive crop to raise.

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In fact, raisins are the most labor intensive crop in North America.

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Sugar cane, which is planted in the summer, is a water-intensive crop and farmers may shift to other crops temporarily, industry executives said.

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